Exercise logic.propositional.consequence

Description
Prove that formula is a logical consequence of a set of formulas

Feedback

• onefirst
• allfirsts (2)
• allapplications
• derivation
• microsteps

Environment

initial=TList [TCon logic1.equivalent [TVar "p",TVar "r"],TCon logic1.equivalent [TVar "q",TVar "s"]]

Path 1

path	[0, 0, 0]
steps	3
major rules	1
active labels	consequence

enter consequence, initial, conj-intro